History 690 Politics and government 391 Foreign relations 357 Communism 108 World War, 1939-1945 107 Social conditions 100 Cold War 97 World politics 72 History and criticism 63 Intellectual life 59 Economic conditions 57 Relations 47 Composers 45 Political aspects 43 Social aspects 42 Heads of state 41 Influence 37 Economic policy 30 Dissenters 28 Russian literature 28 Campaigns 26 Diplomatic history 26 Political and social views 26 Glasnost 22 Jews 22 Military policy 21 Revolutionaries 21 Social life and customs 21 Socialism 21 Ethnic relations 20